Liquid purification or separation – Processes – Including geographic feature
Patent
1990-06-14
1992-10-13
Hruskoci, Peter
Liquid purification or separation
Processes
Including geographic feature
210721, 210724, 210758, 210763, 210904, 210908, 210909, 210911, 210912, C02F 172
Patent
active
051548364
ABSTRACT:
A process for chemically modifying at least one contaminant component in an aqueous-based material comprising: contacting at least one contaminant component in an aqueous-based material with at least one metal component selected from the group consisting of vanadium components in which vanadium is present in the 5+ oxidation state in an amount effective to promote the chemical modification of the at least one contaminant component in the aqueous-based material, iron components in which iron is present in the 3+ oxidation state in an amount effective to promote the chemical modification of the at least one contaminant component in the aqueous-based material, manganese components in which manganese is present in the 3+ oxidation state in an amount effective to promote the chemical modification of the at least one contaminant component in said aqueous-based material and mixtures thereof, and at least one oxygen transfer agent in an amount effective to do at least one of the following: maintain at least partially the promoting activity of the metal component; produce at least a portion of the metal component; and oxidize at least a portion of the at least one contaminant component in the aqueous-based material, the contacting occurring at conditions effective to chemically modify the contaminant component in said aqueous-based material and increase the envornmental acceptability of the aqueous-based material.
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McKibben, M. A. and Barnes, H. L., "Oxidation of pyrite in low temperature acidic solutions: Rate laws and surface textures", Geochim Cosmochim Acta 50, pp. 1509-1520.
Ensci Inc.
Hruskoci Peter
Uxa, Jr. Frank J.
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